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Characterization of algal and microbial community dynamics in a wastewater photo-bioreactor using indigenous algae from lake mälaren
Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi. (ACWA)ORCID-id: 0000-0002-4435-4367
Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi. (ACWA)ORCID-id: 0000-0003-3311-9465
Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, Framtidens energi. (ACWA)ORCID-id: 0000-0001-5480-0167
Indian Institute of Technology, Bombay, India..ORCID-id: 0000-0001-8857-4903
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2014 (Engelska)Konferensbidrag, Muntlig presentation med publicerat abstract (Övrigt vetenskapligt)
Abstract [en]

Microalgae grown in photo-bioreactors can be a valuable source for biomass especially when combined with the treatment of wastewater. While most published research has been studying pure cultures, consortia of algae and bacteria from the wastewater have more complex dynamics affecting both the biomass production and pollutant removal. In this paper we investigate dynamics of algal and bacterial communities in mixed culture photo-bioreactors using chlorophyll and real-time PCR analysis. Wastewater photo-bioreactors were inoculated with water from a nearby lake to add native algae species. The results indicated a decline in bacterial 16S rDNA copy numbers before algae started to multiply. The photo-bioreactors inoculated with lake algae produced more biomass and grew faster than the algae originating only from wastewater. The reactors were effective in removing ammonia from the wastewater which seemed work to mostly through nitrification thus causing an increase in nitrate concentration. There was also an increase in Cr, Co and Ni ion concentrations during the experiment suggesting they may have moved from organic complexes to the water phase as free ions.

Ort, förlag, år, upplaga, sidor
2014.
Nyckelord [en]
algae cultivation; biomass production; community analysis; photo-bioreactors; wastewater treatment
Nationell ämneskategori
Vattenbehandling
Forskningsämne
energi- och miljöteknik
Identifikatorer
URN: urn:nbn:se:mdh:diva-26824OAI: oai:DiVA.org:mdh-26824DiVA, id: diva2:768173
Konferens
4th International Conference on Algal Biomass Biofuels and Bioproducts
Forskningsfinansiär
KK-stiftelsenVINNOVATillgänglig från: 2014-12-03 Skapad: 2014-12-03 Senast uppdaterad: 2017-03-09Bibliografiskt granskad

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Krustok, IvoNehrenheim, EmmaOdlare, MonicaM.A., ShabiimamTruu, Jaak

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